Information about Timeline of communication technology
* 3500s BC - The Sumerians develop cuneiform writing and the Egyptians develop hieroglyphic writing * 1500s BC - The Phoenicians develop an alphabet * 170 BC - Parchment is discovered in Pergamum * 105 - Tsai Lun invents paper * 350 - The Chinese develop a method for printing pages using symbols carved on a wooden block * 1450 - The Chinese develop wooden block movable type printing * 1454 - Johannes Gutenberg finishes a printing press with metal movable type * 1793 - Claude Chappe establishes the first long-distance semaphore telegraph line * 1831 - Joseph Henry proposes and builds an electric telegraph * 1835 - Samuel Morse develops the Morse code * 1843 - Samuel Morse builds the first long distance electric telegraph line * 1876 - Alexander Graham Bell and Thomas Watson exhibit an electric telephone * 1877 - Thomas Edison patents the phonograph * 1889 - Almon Strowger patents the direct dial telephone * 1901 - Guglielmo Marconi transmits radio signals from Cornwall to Newfoundland * 1925 - John Logie Baird transmits the first television signal * 1942 - Hedy Lamarr and George Antheil invent frequency hopping spread spectrum communication technique * 1948 - Claude Shannon writes a paper that establishes the mathematical basis of information theory * 1958 - Chester Carlson presents the first photocopier suitable for office use * 1966 - Charles Kao realizes that silica-based optical waveguides offer a practical way to transmit light via total internal reflection * 1969 - The first hosts of ARPANET, Internet's ancestor, are connected. * 1973 - Akira Hasegawa and Fred Tappert propose the use of solitary waves to carry information in optical fibers * 1977 - Donald Knuth begins work on TeX * 1980 - Linn Mollenauer, Rogers Stollen, and James Gordon demonstrate that solitary waves can be propagated through optical fibers * 1989 - Tim Berners-Lee and Robert Cailliau built the prototype system which became the World Wide Web at CERN * 1991 - Anders Olsson transmits solitary waves through an optical fiber with a data rate of 32 billion bits per second
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